Пример #1
0
        [System.Security.SecurityCritical] // auto-generated
        #endif
        public void Remove()
        {
#if !FEATURE_LEGACYNETCF
            bool     removedAll = true;
            FileLock groupLock  = FileLock.GetFileLock(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_LockPathPrefix), IsolatedStorageFile.s_GroupPathPrefix + "-" + m_ObfuscatedId);

            try {
                groupLock.Lock();

                foreach (string storeDir in Directory.UnsafeGetDirectories(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_StorePathPrefix), "*", SearchOption.TopDirectoryOnly))
                {
                    string groupFile = Path.Combine(storeDir, IsolatedStorageFile.s_GroupFileName);

                    if (m_ObfuscatedId.Equals(File.UnsafeReadAllText(groupFile)))
                    {
                        IsolatedStorageFile f = IsolatedStorageFile.GetUserStoreFromGroupAndStorePath(Group, storeDir);
                        removedAll = removedAll & f.TryRemove();
                    }
                }

                IsolatedStorageFile.TouchFile(Path.Combine(m_GroupPath, IsolatedStorageFile.s_CleanupFileName));

                if (removedAll)
                {
                    IsolatedStorageAccountingInfo.RemoveAccountingInfo(m_GroupPath);
                    File.UnsafeDelete(Path.Combine(m_GroupPath, IsolatedStorageFile.s_IdFileName));
                    File.UnsafeDelete(Path.Combine(m_GroupPath, IsolatedStorageFile.s_CleanupFileName));
                    Directory.UnsafeDelete(m_GroupPath, false);
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } finally {
                groupLock.Unlock();
            }
#else // !FEATURE_LEGACYNETCF
            try {
                using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) {
                    isf.Remove();
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            }
#endif // !FEATURE_LEGACYNETCF
        }
        [System.Security.SecurityCritical] // auto-generated
        #endif
        private static string FetchOrCreateGroup(string groupName, out IsolatedStorageAccountingInfo accountInfo, bool retry) {
            string obfuscatedGroupName = GetHash(groupName);
            string groupRootPath = GetGroupPathFromName(groupName);

            FileLock rootLock = FileLock.GetFileLock(IsolatedStorageRoot);

            try {
                rootLock.Lock();

                if(Directory.UnsafeExists(groupRootPath)) {
                    if(File.UnsafeExists(Path.Combine(groupRootPath, s_CleanupFileName))) {
                        if (retry) {
                            // The IsolatedStorageGroup object we construct here has dummy data for the Quota and Used Size,
                            // But it doesn't really matter, since we won't use that information for anything.  We just want
                            // to use the Group's Remove method.
                            (new IsolatedStorageGroup(groupName, 0, 0, groupRootPath)).Remove();
                            return FetchOrCreateGroup(groupName, out accountInfo, false);
                        } else {
                            throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Init"));
                        }
                    } else {

                        // We should ensure that the id.dat, quota.dat and used.dat files exist.
                        if (!File.UnsafeExists(Path.Combine(groupRootPath, s_IdFileName))) {
                            // We can simply recreate the id.dat file if it is missing
                            File.UnsafeWriteAllText(Path.Combine(groupRootPath, s_IdFileName), groupName);
                        } else {
                            // Check for colision.
                            if (!groupName.Equals(File.UnsafeReadAllText(Path.Combine(groupRootPath, s_IdFileName)))) {
                                throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Init"));
                            }
                        }

                        if (!IsolatedStorageAccountingInfo.IsAccountingInfoValid(groupRootPath)) {
                            // We'll delete all the stuff tied to this group and recreate these files.

                            if (!DeleteStoresForGroup(obfuscatedGroupName)) {
                                // We couldn't clean an existing store that belongs to this group.  So we will fail to create the group, doing
                                // so would mess up our bookkeeping information.
                                throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Init"));
                            }
                        }

                        accountInfo = new IsolatedStorageAccountingInfo(groupRootPath);

                        return groupRootPath;
                    }
                } else {
                    // We might be in a weird state where the "g" directory got deleted but there are stores still in that group around
                    // This could happen if a someone deleted the "g" directory with Windows Explorer or Finder or something.  We should 
                    // ensure there are no stores for this group here.
                    if (!DeleteStoresForGroup(obfuscatedGroupName)) {
                        // We couldn't clean an existing store that belongs to this group.  So we will fail to create the group, doing
                        // so would mess up our bookkeeping information.
                        throw new IsolatedStorageException(Environment.GetResourceString("IsolatedStorage_Init"));
                    }

                    Directory.UnsafeCreateDirectory(groupRootPath);
                    TouchFile(Path.Combine(groupRootPath, s_CleanupFileName));
                    
                    File.UnsafeWriteAllText(Path.Combine(groupRootPath, s_IdFileName), groupName);
                    File.UnsafeDelete(Path.Combine(groupRootPath, s_CleanupFileName));

                    accountInfo = new IsolatedStorageAccountingInfo(groupRootPath);

                    return groupRootPath;
                }
            } catch(IOException e) {
                throw GetIsolatedStorageException("IsolatedStorage_Init", e);
            } catch (UnauthorizedAccessException e) {
                throw GetIsolatedStorageException("IsolatedStorage_Init", e);
            } finally {
                rootLock.Unlock();
            }
        }
 [System.Security.SecurityCritical] // auto-generated
 #endif
 private static string FetchOrCreateGroup(string groupName, out IsolatedStorageAccountingInfo accountInfo) {
     return FetchOrCreateGroup(groupName, out accountInfo, true);
 }
Пример #4
0
        [System.Security.SecurityCritical] // auto-generated
        #endif
        public static IEnumerable<IsolatedStorageGroup> GetGroups() {

            List<IsolatedStorageGroup> groups = new List<IsolatedStorageGroup>();
#if !FEATURE_LEGACYNETCF
            try {
                foreach (string groupDir in Directory.UnsafeGetDirectories(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_GroupPathPrefix), "*", SearchOption.TopDirectoryOnly)) {
                    string idFile = Path.Combine(groupDir, IsolatedStorageFile.s_IdFileName);
                    string id;

                    FileLock groupLock = FileLock.GetFileLock(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_LockPathPrefix), IsolatedStorageFile.s_GroupPathPrefix + "-" + DirectoryInfo.UnsafeCreateDirectoryInfo(groupDir).Name);

                    try {
                        groupLock.Lock();

                        if(!File.UnsafeExists(Path.Combine(groupDir, IsolatedStorageFile.s_CleanupFileName))) {
                            id = File.UnsafeReadAllText(idFile);

                            if (IsolatedStorageAccountingInfo.IsAccountingInfoValid(groupDir)) {
                                using (IsolatedStorageAccountingInfo accountingInfo = new IsolatedStorageAccountingInfo(groupDir)) {
                                    groups.Add(new IsolatedStorageGroup(id, accountingInfo.Quota, accountingInfo.UsedSize, groupDir));
                                }
                            } else {
                                // In this case we've tried to deseriaize a group that doesn't have valid data.  We'll try to remove it.                                
                                try {
                                    new IsolatedStorageGroup(id, 0, 0, groupDir).Remove();
                                } catch (Exception) {
                                    // We couldn't remove the group for some reason.  Ignore it and move on.
                                }
                            }
                        }
                    } catch (IOException) {
                        // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
                    } catch (UnauthorizedAccessException) {
                        // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.          
                    } finally {
                        groupLock.Unlock();
                    }
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.          
            }           
#else
            try {
                using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) {
                    groups.Add(new IsolatedStorageGroup(isf.GroupName, Int64.MaxValue, 0, IsolatedStorageFile.IsolatedStorageRoot));
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.          
            } catch (IsolatedStorageException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.          
            }
#endif

            return groups;
        }
Пример #5
0
        [System.Security.SecurityCritical] // auto-generated
        #endif
        public static IEnumerable <IsolatedStorageGroup> GetGroups()
        {
            List <IsolatedStorageGroup> groups = new List <IsolatedStorageGroup>();

#if !FEATURE_LEGACYNETCF
            try {
                foreach (string groupDir in Directory.UnsafeGetDirectories(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_GroupPathPrefix), "*", SearchOption.TopDirectoryOnly))
                {
                    string idFile = Path.Combine(groupDir, IsolatedStorageFile.s_IdFileName);
                    string id;

                    FileLock groupLock = FileLock.GetFileLock(Path.Combine(IsolatedStorageFile.IsolatedStorageRoot, IsolatedStorageFile.s_LockPathPrefix), IsolatedStorageFile.s_GroupPathPrefix + "-" + DirectoryInfo.UnsafeCreateDirectoryInfo(groupDir).Name);

                    try {
                        groupLock.Lock();

                        if (!File.UnsafeExists(Path.Combine(groupDir, IsolatedStorageFile.s_CleanupFileName)))
                        {
                            id = File.UnsafeReadAllText(idFile);

                            if (IsolatedStorageAccountingInfo.IsAccountingInfoValid(groupDir))
                            {
                                using (IsolatedStorageAccountingInfo accountingInfo = new IsolatedStorageAccountingInfo(groupDir)) {
                                    groups.Add(new IsolatedStorageGroup(id, accountingInfo.Quota, accountingInfo.UsedSize, groupDir));
                                }
                            }
                            else
                            {
                                // In this case we've tried to deseriaize a group that doesn't have valid data.  We'll try to remove it.
                                try {
                                    new IsolatedStorageGroup(id, 0, 0, groupDir).Remove();
                                } catch (Exception) {
                                    // We couldn't remove the group for some reason.  Ignore it and move on.
                                }
                            }
                        }
                    } catch (IOException) {
                        // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
                    } catch (UnauthorizedAccessException) {
                        // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
                    } finally {
                        groupLock.Unlock();
                    }
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            }
#else
            try {
                using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication()) {
                    groups.Add(new IsolatedStorageGroup(isf.GroupName, Int64.MaxValue, 0, IsolatedStorageFile.IsolatedStorageRoot));
                }
            } catch (IOException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (UnauthorizedAccessException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            } catch (IsolatedStorageException) {
                // There isn't anything we can really do about this.  Ignoring these sorts of issues shouldn't lead to corruption.
            }
#endif

            return(groups);
        }